East Coast Fever (ECF) is a disease of cattle and buffalo caused by protozoan parasite, transmitted by ticks in Africa.  

Causative agent

ECF is caused by protozoa Theileria parva. They are obligate intracellular parasites that infect the host’s lyphoblasts.

Geography

East Coast Fever is spread in sub-Saharan Africa.

Impact

The fatality rate for untreated ECF can be as high as 100% in cattle from non–endemic areas. In contrast, the morbidity rate is 100% among indigenous cattle, but the mortality rate is usually low. There are about 50 million cattle at risk (with 10 million calves per annum) and the total yearly cost of the disease is estimated to be US $596 million.

Epidemiology

ECF is transmitted by ticks, acting as biological vectors. Theileria sporozoites are transmitted to animals through saliva of the feeding tick. Transmission can also occur via reused needles. Animals that have survived the infection tend to be carriers.

Clinical signs

The incubation period for ECF is eight to 12 days. Pathology includes fever, enlarged lymph nodes, anorexia, laboured breathing, corneal opacity, nasal discharge, diarrhoea and anaemia. Infected cells sometimes block capillaries in the central nervous system and cause neurological signs.

Control

In endemic areas, the tick numbers can be controlled with acaricides and other methods of tick control such as rotational grazing. Antiparasitic drugs are effective in animals with clinical signs. Vaccination against ECF is done by simultaneously injecting virulent T. parva and an antibiotic (usually a long-acting tetracycline).

For further information, view our ECF product development work.

Official vaccinators of ECF-ITM Muguga Cocktail vaccine

Kenya

VetAid contact: Dr Mpilei David on 0725330278 and Dr Gabriel Turasha on 0721473926

BMC/Agrihaus: Dr Rawlynce Bett on 0726681441

KDFF: Mr David Bett on 0725799246

Sidai Africa Ltd: Dr Rezin Odede on 0722628472, 0701225949, 0703491296

 

Malawi

BVM: Dr Poya Njoka on +265999320530

GSJ: Dr Gilson Njunga on +265888868354

 

Tanzania

Alpha-Veterinary Services (part of PHARMAVACS Limited): Dr Nderingo Ngowi on +255784918504

Ronheam International: Dr Henry Mbwile on +255222116335

Vet Agro Limited: Dr Lieve Lynen on +255786797071

 

Uganda

ERAM: Edward Muhigirwa on +256312266283

Scopevet: Ponsiano Kibirige on +256712273791